20015380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:385

約数の個数: 96

約数和(自身を含む): 53851392

約数和(自身を除く): 33836012

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 41, 44, 55, 70, 77, 82, 110, 140, 154, 164, 205, 220, 287, 308, 317, 385, 410, 451, 574, 634, 770, 820, 902, 1148, 1268, 1435, 1540, 1585, 1804, 2219, 2255, 2870, 3157, 3170, 3487, 4438, 4510, 5740, 6314, 6340, 6974, 8876, 9020, 11095, 12628, 12997, 13948, 15785, 17435, 22190, 24409, 25994, 31570, 34870, 44380, 48818, 51988, 63140, 64985, 69740, 90979, 97636, 122045, 129970, 142967, 181958, 244090, 259940, 285934, 363916, 454895, 488180, 571868, 714835, 909790, 1000769, 1429670, 1819580, 2001538, 2859340, 4003076, 5003845, 10007690, 20015380]

約数ペア:

[(1, 20015380), (2, 10007690), (4, 5003845), (5, 4003076), (7, 2859340), (10, 2001538), (11, 1819580), (14, 1429670), (20, 1000769), (22, 909790), (28, 714835), (35, 571868), (41, 488180), (44, 454895), (55, 363916), (70, 285934), (77, 259940), (82, 244090), (110, 181958), (140, 142967), (154, 129970), (164, 122045), (205, 97636), (220, 90979), (287, 69740), (308, 64985), (317, 63140), (385, 51988), (410, 48818), (451, 44380), (574, 34870), (634, 31570), (770, 25994), (820, 24409), (902, 22190), (1148, 17435), (1268, 15785), (1435, 13948), (1540, 12997), (1585, 12628), (1804, 11095), (2219, 9020), (2255, 8876), (2870, 6974), (3157, 6340), (3170, 6314), (3487, 5740), (4438, 4510)]